Note 10 - Pension and Postretirement Benefits - Changes in the Level 3 Plan Assets of Pension and Other Postretirement Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 03, 2022	Nov. 27, 2021
Pension Plan [Member] | UNITED STATES
Level 3 balance	$ 409,811	$ 398,403
Currency change effect	0	0
Level 3 balance	326,786	409,811
Pension Plan [Member] | Foreign Plan [Member]
Level 3 balance	216,623	202,242
Currency change effect	(22,658)	(5,230)
Level 3 balance	141,908	216,623
Other Postretirement Benefits Plan [Member]
Level 3 balance	135,701	109,056
Currency change effect	0	0
Level 3 balance	120,782	135,701
Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | UNITED STATES
Level 3 balance	186	205
Net transfers into / (out of) level 3	16,564	0
Purchases, sales, issuances and settlements, net	28,501	(19)
Level 3 balance	45,251	186
Fair Value, Inputs, Level 3 [Member] | Pension Plan [Member] | Foreign Plan [Member]
Level 3 balance	749	770
Net transfers into / (out of) level 3	7	64
Net (losses)/gains	(1)	(43)
Currency change effect	(52)	(42)
Level 3 balance	703	749
Fair Value, Inputs, Level 3 [Member] | Other Postretirement Benefits Plan [Member]
Level 3 balance	135,484	108,406
Net transfers into / (out of) level 3	(1,992)	(1,658)
Purchases, sales, issuances and settlements, net	(1,122)	(1,093)
Net (losses)/gains	(12,924)	29,829
Level 3 balance	$ 119,446	$ 135,484